/// <summary>
/// Reads a texture with the specified characteristics from a binary stream.
/// </summary>
internal void LoadTextureData(EndianBinaryReader input, GcGame game, GcTextureFormat format, int totalLevelSize, int width, int height, int levelCount)
{
if (!SupportedTextureFormats.Contains(format))
{
throw new InvalidTplFileException("Unsupported texture format.");
}
int remainingSize = totalLevelSize;
this.format = format;
this.width = width;
this.height = height;
for (int level = 0; level < levelCount; level++)
{
byte[] levelData = new byte[CalculateSizeOfLevel(level)];
// Try to read as many bytes as we can into the level data buffer,
// but we may not be able to due to bugs in F-Zero GX / SMB2.
int sizeToRead = Math.Min(levelData.Length, remainingSize);
input.Read(levelData, 0, sizeToRead);
remainingSize -= sizeToRead;
encodedLevelData.Add(levelData);
}
if (TplVersionDetails.VerifyCorrectSize(game) && SizeOfTextureData(game) != totalLevelSize)
{
throw new InvalidTplFileException("Texture size doesn't match expected size.");
}
}
/// Gets the size of the texture when written to a binary stream.
internal int SizeOfTextureData(GcGame game)
{
int size = 0;
for (int level = 0; level < LevelCount; level++)
{
// Hack: CMPR sizes are not calculated correctly as explained in the doc., replicate the bug
if (TplVersionDetails.HasCmprSizeBug(game) && format == GcTextureFormat.CMPR)
{
int levelWidth = width >> level, levelHeight = height >> level;
int w = PaddingUtils.Align(levelWidth, 4); // Align to 4 (should really be 8)
int h = PaddingUtils.Align(levelHeight, 4); // Align to 4 (should really be 8)
int sz = (w * h * 4) / 8; // CMPR is 4 bits per pixel
int szpad = PaddingUtils.Align(sz, 32); // Align to 32 (this should normally not be needed)
size += szpad;
}
else
{
size += CalculateSizeOfLevel(level);
}
}
return(size);
}
